SLIDE BUSH

The NB SLIDE BUSH is a linear motion mechanism utilizing the rotational motion of ball elements. Since linear motion is obtained using a simple mechanism, the slide bush can be used in a wide variety of applications, including transportation equipment, food processing equipment, and semiconductor manufacturing equipment.

The outer cylinder of slide bush contains a ball retainer that is perfectly designed to control the circulation of ball elements, resulting in smooth linear motion.

Compact Machanism

The NB SLIDE BUSH uses a round shaft for the guiding axis, resulting in space-saving, which allows for compact designs.

Low Friction

The raceway surface is precision ground. Since the contact surface between the ball elements and the raceway surface is minimized, the NB SLIDE BUSH provides low friction compared to other linear motion mechanisms.

A Wide Variety of Shapes and Installation Methods

The NB SLIDE BUSH is available in various types, standard, clearance-adjustable, open, flange, etc., for a various applications.

GM Series

The GM SLIDE BUSH makes efficient use of resin subparts making it possible to achieve an overall weight reduction of 30～50% compared with the SM SLIDE BUSH. The ball return section is made of resin material, which serves for low noise operation. Also, cost-effectiveness expands the use of slide bush in many applications.

Selection According to Environment

NB SLIDE BUSH is available in standard and anticorrosion types. Available options include steel retainer suitable for use in harsh environments and resin retainer for low acoustic, low-cost requirement. Other options can be specified according to the application requirements.

Block Type Series

Block type series is a unit of NB SLIDE BUSH and a block type housing. A variety of block types are available such as precision-machined blocks, resin-made blocks, and cost-effective units, each contributes to higher accuracy, light-weight, and low-cost and design-time saving, respectively.

Compatibility

The NB SLIDE BUSH is fully compatible with a variety of shaft types.

FIT Series

FIT series is a combination of NB SLIDE BUSH and precision-machined shaft. The best-fit between SLIDE BUSH and shaft achieves a smooth, high accuracy performance meeting the customer requirements.

Recent years, PMI Group places great emphasis in upgrading not only the manufacturing and quality of products but also the manpower. In addition to comply with requirement of quality management system, PMI Group has been actively carried out 『RoHS Green Environmental System』 and environmentally friendly management system to conform to the regulation in order to reach a pollution-free workplace.

The PMI linear guideway is a design of rolling motion with a low friction coeffi cient, and the diff erence between dynamic and static friction is very small. Therefore, the stick-slip will not occur when submicron feeding is making.

Low frictional resistance,high precision maintainedfor long period

The frictional resistance of a linear guideway is only 1/20th to 1/40th of that ina slide guide. With a linear guideway, a well lubrication can be easily achieved by supplying grease through the grease nipple on carriage or utilizing a centralized oil pumping system, thus the frictional resistance is decreased and the accuracy could be maintained for long period.

High rigidity withfour-way load design

The optimum design of geometric mechanics makes the linear guideway to bear the load in all four directions, radial, reversed radial, and two lateral directions. Furthermore, the rigidity of linear guideway could be easily achieved by preloading carriage and by adding the number of carriages.

Suitable for high speedoperation

Due to the characteristic of low frictional resistance, the required driving force is much lower than in other systems, thus the power consumption is small. Moreover, the temperature rising effect is small even under high speed operation.

Easy installation withinterchangeability

Compared with the high-skill required scrapping process of conventional slide guide, the linear guideway can offer high precision even if the mounting surface is machined by milling or grinding. Moreover the interchangeability of linear guideway gives a convenience for installation and future maintenance.

Features

The trains of balls are designed to a contact angle of 45° which enables it to bear an equal load in radial, reversed radial and lateral directions. Therefore, it can be applied in any installation direction. Furthermore, MSA series can achieve a well balanced preload for increasing rigidity in four directions while keeping a low frictional resistance. This is especially suit to high precision and high rigidity required motion.The patent design of lubrication route makes the lubricant evenly distribute in each circulation loop. Therefore, the optimum lubrication can be achieved in any installation direction, and this promotes the performance in running accuracy, service life, and reliability.

Characteristics

‧High Rigidity, Four-way Equal Load

‧Self Alignment Capability

‧Smooth Movement with Low Noise

‧Interchangeability

MSA-A/MSA-LA、MSA-E/MSA-LE、MSA-S/MSA-LS

MSA

Carriage Type

Rail Type

Description of Specifi cation

Accuracy Grade

Preload Grade

The Shoulder Height and Corner Radius for Installation

Dimensional Tolerance of Mounting Surface

Rail Maximum Length and Standrad

Tapped-hole Rail Dimensions

MSA A / MSA LA SERIES VARDHMAN BEARINGS

MSA A/LA

Note: Request for size 55 and 65 MSA-A / MSA-LA carriage, please refer to MSA-E / MSA-LE carriage type.Note: The basic dynamic load rating C of ball type is based on the 50 km for nomonal life. The conversion between C for 50 km and C100 for 100 km is C=1.26 x C100.Note*: Single: Single carriage/ Double: Double carriages closely contacting with each other.

Unit:mm

Model No.

External dimension

Carriage dimension

HeightH

WidthW

LengthL

W2

H2

B

C

S × l

L1

T

T1

N

G

K

d1

Grease Nipple

MSA15A

24

47

56.3

16

4.2

38

30

M5 × 11

39.3

7

11

4.3

7

3.2

3.3

G-M4

MSA20AMSA 20LA

30

63

72.988.8

21.5

5

53

40

M6 × 10

51.367.2

7

10

5

12

5.8

3.3

G-M6

MSA25AMSA 25LA

36

70

81.6100.6

23.5

6.5

57

45

M8 × 16

5978

11

16

6

12

5.8

3.3

G-M6

MSA30AMSA 30LA

42

90

97119.2

31

8

72

52

M10 × 18

71.493.6

11

18

7

12

6.5

3.3

G-M6

MSA35AMSA 35LA

48

100

111.2136.6

33

9.5

82

62

M10 × 21

81106.4

13

21

8

11.5

8.6

3.3

G-M6

MSA45AMSA 45LA

60

120

137.7169.5

37.5

10

100

80

M12 × 25

102.5134.3

13

25

10

13.5

10.6

3.3

G-PT1/8

Model No.

Rail dimension

Basic load rating

Static moment rating

Weight

WidthW1

HeightH1

PitchP

Estd.

D × h × d

Dynamic CkN

StaticCokN

MpkN-m

MYkN-m

MRkN-m

Carriagekg

Railkg/m

Single*

Double*

Single*

Double*

MSA 15A

15

15

60

20

7.5 × 5.3 × 4.5

11.8

18.9

0.12

0.68

0.12

0.68

0.14

0.18

1.5

MSA 20AMSA 20LA

20

18

60

20

9.5 × 8.5 × 6

19.223.3

29.539.3

0.230.39

1.422.23

0.230.39

1.422.23

0.290.38

0.40.52

2.4

MSA 25AMSA 25LA

23

22

60

20

11 × 9 × 7

28.134.4

42.456.6

0.390.67

2.203.52

0.390.67

2.203.52

0.480.63

0.620.82

3.4

MSA 30AMSA 30LA

28

26

80

20

14 × 12 × 9

39.247.9

57.877.0

0.621.07

3.675.81

0.621.07

3.675.81

0.791.05

1.091.43

4.8

MSA 35AMSA 35LA

34

29

80

20

14 × 12 × 9

52.063.6

75.5100.6

0.931.60

5.478.67

0.931.60

5.478.67

1.251.67

1.612.11

6.6

MSA 45AMSA 45LA

45

38

105

22.5

20 × 17 × 14

83.8102.4

117.9157.3

1.813.13

10.6716.95

1.813.13

10.6716.95

2.573.43

2.983.9

11.5

MSA E / MSA LE SERIES VARDHMAN BEARINGS

MSA E/LE

Model No.

Bolt Size

S1

S2

MSA 15

M5

M4

MSA 20

M6

M5

MSA 25

M8

M6

MSA 30

M10

M8

MSA 35

M10

M8

MSA 45

M12

M10

MSA 55

M14

M12

MSA 65

M16

M14

Note: The basic dynamic load rating C of ball type is based on the 50 km for nomonal life. The conversion between C for 50 km and C100 for 100 km is C=1.26 x C100.Note*: Single: Single carriage / Double: Double carriages closely contacting with each other.

Unit:mm

Model No.

External dimension

Carriage dimension

HeightH

WidthW

LengthL

W2

H2

B

C

S × l

L1

T

T1

T2

N

G

K

d1

Grease Nipple

MSA15E

24

47

56.3

16

4.2

38

30

M5 × 7

39.3

7

11

7

4.3

7

3.2

3.3

G-M4

MSA20EMSA 20LE

30

63

72.988.8

21.5

5

53

40

M6 × 10

51.367.2

7

10

10

5

12

5.8

3.3

G-M6

MSA25EMSA 25LE

36

70

81.6100.6

23.5

6.5

57

45

M8 × 10

5978

11

16

10

6

12

5.8

3.3

G-M6

MSA30EMSA 30LE

42

90

97119.2

31

8

72

52

M10 × 10

71.493.6

11

18

10

7

12

6.5

3.3

G-M6

MSA35EMSA 35LE

48

100

111.2136.6

33

9.5

82

62

M10 × 13

81106.4

13

21

13

8

11.5

8.6

3.3

G-M6

MSA45EMSA 45LE

60

120

137.7169.5

37.5

10

100

80

M12 × 15

102.5134.3

13

25

15

10

13.5

10.6

3.3

G-PT 1/8

MSA55EMSA 55LE

70

140

161.5199.5

43.5

13

116

95

M14 × 17

119.5157.5

19

32

17

11

13.5

8.6

3.3

G-PT 1/8

MSA65EMSA 65LE

90

170

199253

53.5

15

142

110

M16 × 23

149203

21.5

37

23

19

13.5

8.6

3.3

G-PT 1/8

Model No.

Rail dimension

Basic load rating

Static moment rating

Weight

WidthW1

HeightH1

PitchP

Estd.

D × h × d

Dynamic CkN

StaticCokN

MpkN-m

MYkN-m

MRkN-m

Carriagekg

Railkg/m

Single*

Double*

Single*

Double*

MSA15E

15

15

60

20

7.5 × 5.3 × 4.5

11.8

18.9

0.12

0.68

0.12

0.68

0.14

0.18

1.5

MSA20EMSA 20LE

20

18

60

20

9.5 × 8.5 × 6

19.223.3

29.539.3

0.230.39

1.422.23

0.230.39

1.422.23

0.290.38

0.40.52

2.4

MSA25EMSA 25LE

23

22

60

20

11 × 9 × 7

28.134.4

42.456.6

0.390.67

2.203.52

0.390.67

2.203.52

0.480.63

0.620.82

3.4

MSA30EMSA 30LE

28

26

80

20

14 × 12 × 9

39.247.9

57.877.0

0.621.07

3.675.81

0.621.07

3.675.81

0.791.05

1.091.43

4.8

MSA35EMSA 35LE

34

29

80

20

14 × 12 × 9

52.063.6

75.5100.6

0.931.60

5.478.67

0.931.60

5.478.67

1.251.67

1.612.11

6.6

MSA45EMSA 45LE

45

38

105

22.5

20 × 17 × 14

83.8102.4

117.9157.3

1.813.13

10.6716.95

1.813.13

10.6716.95

2.573.43

2.983.9

11.5

MSA55EMSA 55LE

53

44

120

30

23 × 20 × 16

123.6151.1

169.8226.4

3.135.40

17.5728.11

3.135.40

17.5728.11

4.506.00

4.175.49

15.5

MSA65EMSA 65LE

63

53

150

35

26 × 22 × 18

198.8253.5

265.3375.9

6.1111.84

33.7157.32

6.1111.84

33.7157.32

8.3611.84

8.7311.89

21.9

MSA S / MSA LS SERIES VARDHMAN BEARINGS

MSA S/LS

Note: The basic dynamic load rating C of ball type is based on the 50 km for nomonal life. The conversion between C for 50 km and C100 for 100 km is C=1.26 x C100.Note*: Single: Single carriage / Double: Double carriages closely contacting with each other.

Model No.

External dimension

Carriage dimension

HeightH

WidthW

LengthL

W2

H2

B

C

S × l

L1

T

N

G

K

d1

Grease Nipple

MSA15S

28

34

56.3

9.5

4.2

26

26

M4 x 5

39.3

7.2

8.3

7

3.2

3.3

G-M4

MSA20SMSA 20LS

30

44

72.988.8

12

5

32

3650

M5 x 6

51.367.2

8

5

12

5.8

3.3

G-M6

MSA25SMSA 25LS

40

48

81.6100.6

12.5

6.5

35

3550

M6 x 8

5978

10

10

12

5.8

3.3

G-M6

MSA30SMSA 30LS

45

60

97119.2

16

8

40

4060

M8 x 10

71.493.6

11.7

10

12

6.5

3.3

G-M6

MSA35SMSA 35LS

55

70

111.2136.6

18

9.5

50

5072

M8 x 12

81106.4

12.7

15

11.5

8.6

3.3

G-M6

MSA45SMSA 45LS

70

86

137.7169.5

20.5

10

60

6080

M10 x 17

102.5134.3

16

20

13.5

10.6

3.3

G-PT1/8

MSA55SMSA 55LS

80

100

161.5199.5

23.5

13

75

7595

M12 x 18

119.5157.5

18

21

13.5

8.6

3.3

G-PT1/8

MSA65SMSA 65LS

90

126

199253

31.5

15

76

70120

M16 x 20

149203

23

19

13.5

8.6

3.3

G-PT1/8

Model No.

Rail dimension

Basic load rating

Static moment rating

Weight

WidthW1

HeightH1

PitchP

Estd.

D × h × d

Dynamic CkN

StaticCokN

MpkN-m

MYkN-m

MRkN-m

Carriagekg

Railkg/m

Single*

Double*

Single*

Double*

MSA15S

15

15

60

20

7.5 x 5.3 x 4.5

11.8

18.9

0.12

0.68

0.12

0.68

0.14

0.18

1.5

MSA20SMSA 20LS

20

18

60

20

9.5 x 8.5 x 6

19.223.3

29.539.3

0.230.39

1.422.23

0.230.39

1.422.23

0.290.38

0.30.39

2.4

MSA25SMSA 25LS

23

22

60

20

11 x 9 x7

28.134.4

42.456.6

0.390.67

2.203.52

0.390.67

2.203.52

0.480.63

0.520.68

3.4

MSA30SMSA 30LS

28

26

80

20

14 x 12 x 9

39.247.9

57.877.0

0.621.07

3.675.81

0.621.07

3.675.81

0.791.05

0.861.12

4.8

MSA35SMSA 35LS

34

29

80

20

14 x 12 x 9

52.063.6

75.5100.6

0.931.60

5.478.67

0.931.60

5.478.67

1.251.67

1.451.9

6.6

MSA45SMSA 45LS

45

38

105

22.5

20 x 17 x 14

83.8102.4

117.9157.3

1.813.13

10.6716.95

1.813.13

10.6716.95

2.573.43

2.833.7

11.5

MSA55SMSA 55LS

53

44

120

30

23 x 20 x 16

123.6151.1

169.8226.4

3.135.40

17.5728.11

3.135.40

17.5728.11

4.506.00

4.124.91

15.5

MSA65SMSA 65LS

63

53

150

35

26 x 22 x 18

198.8253.5

265.3375.9

6.1111.84

33.7157.32

6.1111.84

33.7157.32

8.3611.84

6.438.76

21.9

Features

The trains of balls are designed to a contact angle of 45° which enables it to bear an equal load in radial, reversed radial and lateral directions. Therefore, it can be applied in any installation direction. Furthermore, MSB series can achieve a well balanced preload for increasing rigidity in four directions while keeping a low frictional resistance. This is especially suit to high precision and high rigidity required motion.The patent design of lubrication route makes the lubricant evenly distribute in each circulation loop. Therefore, the optimum lubrication can be achieved in any installation direction, and this promotes the performance in running accuracy, service life, and reliability.

Characteristics

‧Compact, Four-way Equal Load

‧Self Alignment Capability

‧Smooth Movement with Low Noise

‧Interchangeability

MSB-TE/MSB-E、MSB-TS/MSB-S

MSB

Carriage Type

Rail type

Description of Specifi cation

Accuracy Grade

Preload Grade

The Shoulder Height and Corner Radius for Installatio

Dimensional Tolerance of Mounting Surface

Rail Maximum Length and Standrad

Tapped-hole Rail Dimensions

MSB TE / MSB E SERIES VARDHMAN BEARINGS

MSB TE/E

Model No.

Bolt Size

S1

S2

MSB 15

M5

M4

MSB 20

M6

M5

MSB 25

M8

M6

MSB 30

M10

M8

MSB 35

M10

M8

Note: Rail mounting holes for M3 (6x4.5x3.5) and M4 (7.5x5.3x4.5) are available for MSB15 rail. The codes of rail type are MSB15R for M3 mounting holes, and MSB15U for M4 mounting holes.Note: The basic dynamic load rating C of ball type is based on the 50 km for nomonal life. The conversion between C for 50 km and C100 for 100 km is C=1.26 x C100.Note*: Single: Single carriage/ Double: Double carriages closely contacting with each other.

Unit:mm

Model No.

External dimension

Carriage dimension

HeightH

WidthW

LengthL

W2

H2

B

C

S × l

L1

T

T1

N

G

K

d1

Grease Nipple

MSB 15TEMSB 15E

24

52

4057

18.5

4.5

41

-26

M5 x 7

23.540.5

5

7

5.5

5.5

5.1

3.3

G-M4

MSB 20TEMSB 20E

28

59

4867

19.5

6

49

-32

M6 x 9

2948

5

9

5.5

12

5.9

3.3

G-M6

MSB 25TEMSB 25E

33

73

60.282

25

7

60

-35

M8 x 10

38.760.5

7

10

6

12

6.3

3.3

G-M6

MSB 30TEMSB 30E

42

90

6896.7

31

9.5

72

-40

M10 x 10

43.372

7

10

8

12

6.3

3.3

G-M6

MSB 35TEMSB 35EMSB 35LE

48

100

78112137.5

33

9.5

82

-5072

M10 x 13

4680105.5

9

13

8.5

12

9.8

3.3

G-M6

Unit:mm

Model No.

External dimension

Carriage dimension

HeightH

WidthW

LengthL

W2

H2

B

C

S × l

L1

T

T1

N

G

K

d1

Grease Nipple

MSB 15TEMSB 15E

24

52

4057

18.5

4.5

41

-26

M5 x 7

23.540.5

5

7

5.5

5.5

5.1

3.3

G-M4

MSB 20TEMSB 20E

28

59

4867

19.5

6

49

-32

M6 x 9

2948

5

9

5.5

12

5.9

3.3

G-M6

MSB 25TEMSB 25E

33

73

60.282

25

7

60

-35

M8 x 10

38.760.5

7

10

6

12

6.3

3.3

G-M6

MSB 30TEMSB 30E

42

90

6896.7

31

9.5

72

-40

M10 x 10

43.372

7

10

8

12

6.3

3.3

G-M6

MSB 35TEMSB 35EMSB 35LE

48

100

78112137.5

33

9.5

82

-5072

M10 x 13

4680105.5

9

13

8.5

12

9.8

3.3

G-M6

MSB TS , MSB S SERIES VARDHMAN BEARINGS

MSB TS/S

Note: Rail mounting holes for M3 (6x4.5x3.5) and M4 (7.5x5.3x4.5) are available for MSB15 rail. The codes of rail type are MSB15R for M3 mounting holes, and MSB15U for M4 mounting holes.Note: The basic dynamic load rating C of ball type is based on the 50 km for nomonal life. The conversion between C for 50 km and C100 for 100 km is C=1.26 x C100.Note*: Single: Single carriage/ Double: Double carriages closely contacting with each other.

Model No.

External dimension

Carriage dimension

HeightH

WidthW

LengthL

W2

H2

B

C

S × l

L1

T

N

G

K

d1

Grease Nipple

MSB 15TSMSB 15S

24

34

4057

9.5

4.5

26

-26

M4 x 6

23.540.5

6

5.5

5.5

5.1

3.3

G-M4

MSB 20TSMSB 20S

28

42

4867

11

6

32

-32

M5 x 7

2948

6

5.5

12

5.9

3.3

G-M6

MSB 25TSMSB 25S

33

48

60.282

12.5

7

35

-35

M6 x 9

38.760.5

8

6

12

6.3

3.3

G-M6

MSB 30TSMSB 30S

42

60

6896.7

16

9.5

40

-40

M8 x 12

43.372

8

8

12

6.3

3.3

G-M6

MSB 35TSMSB 35SMSB 35LS

48

70

78112137.5

18

9.5

50

-5072

M8 x 12

4680105.5

12.5

8.5

11.5

9.8

3.3

G-M6

Model No.

Rail dimension

Basic load rating

Static moment rating

Weight

WidthW1

HeightH1

PitchP

Estd.

D × h × d

Dynamic CkN

StaticCokN

MpkN-m

MYkN-m

MRkN-m

Carriagekg

Railkg/m

Single*

Double*

Single*

Double*

MSB 15TSMSB 15S

15

12.5

60

20

6 x 4.5 x 3.5(7.5 x 5.3 x 4.5)

6.710.0

9.616.9

0.040.10

0.260.61

0.040.10

0.260.61

0.070.13

0.090.16

1.2

MSB 20TSMSB 20S

20

15

60

20

9.5 x 8.5 x 6

9.713.9

14.223.6

0.070.18

0.440.97

0.070.18

0.440.97

0.140.24

0.160.26

2

MSB 25TSMSB 25S

23

18

60

20

11 x 9 x 7

15.622.3

22.136.9

0.130.35

0.911.87

0.130.35

0.911.87

0.260.43

0.290.45

3

MSB 30TSMSB 30S

28

23

80

20

11 x 9 x 7

23.132.9

31.853.1

0.230.60

1.393.15

0.230.60

1.393.15

0.450.74

0.520.86

4.4

MSB 35TSMSB 35SMSB 35LS

34

27.5

80

20

14 x 12 x 9

35.752.063.6

44.075.5100.6

0.340.931.60

2.815.478.67

0.340.931.60

2.815.478.67

0.751.281.67

0.811.131.49

6.2

Features

The full roller type linear guideway, MSR series, equip with rollers instead of the ball, and therefore the MSR series can provide higher rigidity and loading than the normal type with the same size. Especially suit for the requests of high accuracy, heavy load and high rigidity.